curl -X PATCH https://api.phanomcloud.online/bots/3fa85f64-5717-4562-b3fc-2c963f66afa6/startup-command \
  -H "Authorization: Bearer sess_..." \
  -H "Content-Type: application/json" \
  -d '{ "startup_command": "node src/main.js" }'

{
  "success": true,
  "data": { "startup_command": "node src/main.js" },
  "message": "Startup command updated. Restart to apply."
}